29
/es/
es
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
451156
38777
2
Crear
Public Timelines
Biblioteca
FAQ
For education
Cabinet
For educational institutions
For teachers
For students/pupils
1 ene 1817 año - Johann Dobereiner noticed that elements of similar chemical properties are grouped together based on atomic weight.
Añadido al timeline:
16 dic 2017
0
0
449
Periodic Table Timeline
fecha:
1 ene 1817 año
Ahora mismo
~ 207 years ago